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12270031 = 191227283
BaseRepresentation
bin101110110011…
…100111001111
3212002101022121
4232303213033
511120120111
61114553411
7206202454
oct56634717
925071277
1012270031
116a20724
124138867
132707b97
1418b582b
151125871
hexbb39cf

12270031 has 8 divisors (see below), whose sum is σ = 12432384. Its totient is φ = 12109080.

The previous prime is 12269989. The next prime is 12270047. The reversal of 12270031 is 13007221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12270031 - 29 = 12269519 is a prime.

It is a super-2 number, since 2×122700312 = 301107321481922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12269987 and 12270014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12270631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43216 + ... + 43498.

It is an arithmetic number, because the mean of its divisors is an integer number (1554048).

Almost surely, 212270031 is an apocalyptic number.

12270031 is a deficient number, since it is larger than the sum of its proper divisors (162353).

12270031 is a wasteful number, since it uses less digits than its factorization.

12270031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 12270031 is about 3502.8604025853. The cubic root of 12270031 is about 230.6473946815.

Adding to 12270031 its reverse (13007221), we get a palindrome (25277252).

The spelling of 12270031 in words is "twelve million, two hundred seventy thousand, thirty-one".

Divisors: 1 191 227 283 43357 54053 64241 12270031